Add support for range types to media query interpretor.

This allows browsers to be more vague when fetching @imports.

Improve documentation, release version 1.2

Write reference documentation.

Unittest conditional styles, add loadImports API to fit Rhapsode's use.

Draft interpretor for @supports.

Media queries: fix popping two items off stack.

I forgot that FIFO reversed the order of the list.

Implement @import & @media

Dependency injection required for an HTTP client library.